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From: Scott Wood <scottwood@freescale.com>
To: LEROY Christophe <christophe.leroy@c-s.fr>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>,
	Paul Mackerras <paulus@samba.org>,
	<linuxppc-dev@lists.ozlabs.org>, <linux-kernel@vger.kernel.org>
Subject: Re: [v2,2/2] powerpc32: add support for csum_add()
Date: Tue, 24 Mar 2015 20:30:23 -0500	[thread overview]
Message-ID: <20150325013023.GA7588@home.buserror.net> (raw)
In-Reply-To: <20150203113927.8604D1A5F14@localhost.localdomain>

On Tue, Feb 03, 2015 at 12:39:27PM +0100, LEROY Christophe wrote:
> The C version of csum_add() as defined in include/net/checksum.h gives the
> following assembly:
>        0:       7c 04 1a 14     add     r0,r4,r3
>        4:       7c 64 00 10     subfc   r3,r4,r0
>        8:       7c 63 19 10     subfe   r3,r3,r3
>        c:       7c 63 00 50     subf    r3,r3,r0
> 
> include/net/checksum.h also offers the possibility to define an arch specific
> function.
> This patch provides a ppc32 specific csum_add() inline function.

What makes it 32-bit specific?

-Scott

  reply	other threads:[~2015-03-25  1:30 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-02-03 11:39 [PATCH v2 2/2] " Christophe Leroy
2015-03-25  1:30 ` Scott Wood [this message]
     [not found]   ` <553FD904.8000309@c-s.fr>
2015-05-02  1:00     ` [v2,2/2] " Scott Wood
2015-05-04 22:10       ` Segher Boessenkool
2015-05-19 11:37         ` leroy christophe
2015-03-31  3:14 ` Scott Wood

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